Which research result would provide evidence that aggression is a heritable trait?
a. Identical twins reared together are more similar in their levels of aggressiveness than identical twins rearedapart
b. Adopted children are more similar in levels of aggressiveness to their adoptive parents than to their biologicalparents.
c. Fraternal twins are more similar in levels of aggressiveness than non-twin siblings.
d. Identical twins are more similar in levels of aggressiveness than fraternal twins.
d
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Ferguson and others (2008) found that ____ beliefs about blood donation were the best predictor of whether students would give blood
a. self-oriented b. ambivalent c. other-oriented d. selfless
The proposal that "the occurrence of aggressive behavior always presupposes the existence of frustration [and] the existence of frustration always leads to some form of aggression" is known as ____
a. the frustration-aggression hypothesis b. the hostile expectation bias c. relational aggression theory d. displacement